Television cabinet having viewing tube housing rotatable about horizontal axis



July 22, 1952 J. K. Ross TELEVISION CABINET HAVING VIEWING TUBE HOUSINGROTATABLE ABOUT HORIZONTAL AXIS 4 Sheets-Sheet 1 Filed Deo. 27, 1946fig. 2

' IN1/amos. 4 Jaseph Rose ArraR/vex July 22, 1952 J. K. Rose TELEVISIONCABINET HAVING VIEWING TUBE HOUSING ROTATABLE ABOUT HORIZONTAL AXIS 4Sheets-Sheet 2 Filed DSC. 27, 1946 INVENTOR. Joseph K. ,Qase

July 22, 1952 J. K. RosE 2,604,536

TELEVISION CABINET HAVING VIEW G TUBE HOUSING ROT ATABLE ABOUT HORIZONAXIS Filed Dec. 27, 1946 4 Sheets-Sheet I5 INVENWR. 75 72 Joseph k @ase3% L 7,5/4 2 Arramvsr July 22, 1952 J. K. ROSE TELEVISION CABINET HAVINGVIEWING ABOUT 0 2,604,536 Ho NG Joseph K. Rose BY MM Arnon/EY.

Patented July 22, 1952 UNITED STATES PATENToFFICE TELEVISION CABINETHAVING VIEWING TUBE HOUSING ROTATABLE ABOUT HORIZONTAL AXIS Joseph K.Rose, Chicago,V Ill.

Application December 27, 1946, Serial No. 718,850

1 Claim. 1

This invention relates to a television receiver or other viewingapparatus, such asa projector having a self-contained screen, andparticularly to means to adjust the angularity of the viewing screen inaccordance with the conditions surrounding theA reception of thetelevised images and to means for shielding the viewing screen fromextraneous light. Y

lImages displayed on a viewing screenyas in a television receiver, canbe viewed most perfectly when the eyes of the observer are near a lineperpendicular to thecenter of the plane of the viewing surface of theimage exhibiting member.

`Within a certain distance from this line viewing is consideredsatisfactory. This satisfactory Viewing space in front of the imageexhibiting member is contained within the confines of a truncated gurewhose cross sectional area is approximately the same shape as theviewing screen, that is, rectangular with rounded corners. Thesesections become increasingly larger as the distance from the screenincreases. The longitudinal axis of this truncated figure is the abovementioned perpendicular to the center of the image exhibiting member.Television receivers heretofore known have had fixed viewing screens,incapable of adjustment except by the process of moving the entirecabinet housing the receiver.

It is anobject of this invention to provide means for adjusting theangularity of the viewing screen by rotating the screen, withinpredetermined limits, in one or more directions. It is another object ofthis invention to mount the imagefexhibiting member rigidly with asupporting shelf and an apertured front panel so that the assembly ismovable as a unit relative to the cabinet. Itis another object of thisinvention to provide light shields for the viewing screen that may beadjusted in accordance with the position of the viewing screen as wellasthe extraneous light conditions, Other objects of this invention willbecome apparent upon reading the followingl description in conjunctionwith the accompanying drawings, in which:

Figure 1 is a perspective view of a television receiver with the viewingscreen pulled forward for viewing by seated viewers andthe top sectiondown to provide maximum top light shielding; 'l i Figure 2 is afragmentary .perspective view showing the viewing screen pushed back afew degrees for viewing by standing viewers and the movable portion ofthe cabinet top raisedrangu- ITIS- 7.5)

2 larly to increase the vertical angleA of without eliminating the toplight shielding;

Figure 3 is a cross sectional view showing the movable shelf and panelmounting;

Figure liis a fragmentary cross sectional view, showing the means ofsupporting theshelf for` sliding movement; s

Figure 5 is a detail elevational view of a modication showing al liftingjack structure for.

moving the shelf;

Figure 6 is a perspective View of another em- Figure 11 is a fragmentaryperspective View.

showing the viewing screen assembly of Figure 10 -in its forwardposition; v

Figure 12 is a perspectiverview of another embodiment in which theviewing screen and related mechanism are mountedl on `an 'fangularlymovable shelf and panel assembly that is pivoted at the bottom of thefront panel; Y j

Figure 13 is a fragmentary perspective View of the embodiment of Figure12 with the .viewing screen moved forwardly;

Figure 14 is a cross sectional viewl through thel embodiment of Figures12 and v 13 showingrthe Figure 12 position in solid lines andthe Figure13 position in dotted lines; Y y

Figure 15 is a fragmentary perspective View of a television receiver inwhich the viewing screen is rotatable to vary the lateral angle `of thescreen; y Y

Figure 16 is a fragmentary perspective View showing the Viewingscreen-rotated slightly from the position shown in Figure 15;

Figure 17 is a rear perspective'view. of the in-' tatable platform; and

Figure 18 is a detail perspective view Vofthe terior of the televisionreceiver Vshowing the'ro-z means for holding the platform in anylateralv position. l v In the drawings, the reference numeral Zindicatesa television receiver cabinet having a front 3, a top 4, side walls 5and 6, a back 1 and a base vision,

f the. the image ex-l V3 8. A shelf 9 secured inside the cabinet has thetelevision chassis IU mounted thereon, as shown .in Figure 3. Controlknobs II are mounted on the front of the cabinet to operate thereceiver. A movable assembly I2 comprising a panel I3 and a shelf I4 ispivotedY to the front of the cabinet just above the control knobs II.The

panel I3 is provided adjacent its top with a` handle I5 by means ofwhich the assembly may be moved angularly between a nearly verticalposition and a position approximately thirty degrees from the vertical.Sufficient friction is provided, by means hereinafter described, to holdthe assembly in any position of angular adjustment within its range ofmovement.

An upright member I5 is positioned adjacent The uprights'are each sideof the shelf I4. secured to the shelf 9 in any suitable manner.. Themembers I6 are each provided with a recess I8, as shown in Figure 4. Therecess extends fromadjacentthe top of the member I8 to a point.just'above the shelf I4 when the shelf is in its lowermostposition, andis curved slightly as shown in Fig-ure 3. A block I9 is secured tothelshelf- I4 adjacent eachvrecess 'I8. Each block I9? has a recess'. 28extending linwardly from the side adjacent the slot I8. Preferably' acup shaped member 2l issecured inthe recess. A coiledVv spring 22v ispositioned in therrnemloerv 2| and exerts outward pressure on a` rod 23which' The panel I3 is provided with an aperture 25A which is inregistration with the front end 23 of avcathode-ray picture tube21'which is movable with the assembly I2. The front end 26-of thecathode-fray picture tube is vgenerally circular in cross sectionalareal but the aperture blocks out part of ltheed'ges so that the visiblearea appears to be substantially rectangular with rounded corners; This`portion visible through the apertu'r'e 25' 'constitutes the imageexhibiting member or'viewing screen. Y

The-top section' 28, positioned over the panel I3, is hinged at itsrear-edgeto the top 4. The underside o f'the 4top section 28 is curved,as indicated at 29, so that itsinner surface is anT arc coinciding withthe path of travel of the top edge-of-the'panel I3- when the top sectionis in its: down-position. Accordingly, no gap exists between the panelI3 and the top section 2-8' when the top section is down regardlessofthe angular adjustment of the image-exhibiting member.

In the positions of the image exhibiting member shown in Figures 1 to 3the panel I3 andthe image exhibiting member 26. slope rearwardly andupwardlyfrom the front of the cabinet just above the controlvknobs l I.vIn this position` the inset portion of the sidejwall '5 'and the centerY bellows 3I and 32'attached to its bottom surface adjacent its oppositelateral edges. When the top section is raised angularly the bellows 3|and 32 extend the side light shielding so as to prevent any extraneouslight from passing between the 4top of the cabinet and the underside ofthetop section 28. In the down position of the top section the sidelight shields collapse into recesses 3l' yand 32 in the top of the sidewall 5' and the center wall I1. If desired, the recesses may bepositioned in the top section adjacent its lateraledges instead of inthe walls 5 and I1.

Instead of. Vthe bellows"v -3I shields may be formed of' a plurality ofsmall interengaged sections or may beein the form of solid opaquesections. Y

The hinging of the topfsection makes it possible tov reducexthe heightofthe cabinet that would otherwise be required. The Yhinged atop sectionprovides an angle of visionrsufciently high' to enable standing viewersto observe the screen with a relatively low cabinet. Withv a fixed'topsection the top would obscure the view of standing viewers unless itwere positioned a greater distance above the image exhibiting member.

A modied'structure is shown in Figure 5 in which positive controlmeans-isprovided for mo-ving the assembly I2 aboutpits pivot. Thecontrol means isla lifting jack comprising a shaft 34 rotatablysecured-to a base 35 mounted on the shelf 9'. The shaft is threaded, asindicated at 33, and a sleeve 31 is'engaged with the threaded portion tomovesubstantially vertically as the shaft is rotated.. A pin 33; securedto the'v upper end of the sleeve extends into a recessf39 in the edge ofthe shelf I4" so' as to move the unitA I 2f about its pivot 'as the'pin/movessubstantially vertically. The shaft 34'Y is rotated by means ofar gear 43 secured theretoY which'is engaged by' a worm gear; 4l;mounted on a. shaft' 42 which extends' through: 'the sidewall' 5d ofthe'cabinet. Av wheel or knob (not shown)' is fixed to the shaft' 42 outsideith'e' cabinet sofitfcanibe rotated.. 'Itobvicus that the-jack mechanismwill maintain the unit I2 inv any angular position to which-it is moved.Whenthelifting jackis used theupright members -I'Iin and` their relatedstructure'maybe omitted. v Y

In. V the form of the inventionshownin Fig,- ures 6 te 9, inclusive,aemovable. :assemblyJ-l',v comprising a shelf lill,v afrontY panel45,landa top section 46, is pivotedto, apair' of oppositely disposedupri'ghts 41, as indicated at 48,.'Figure 8. Thepicture tube 49.andlthe'chassis 58 are botlisecured in fixed relationship to theassembly and rotate about' the pivot therewith. The .shelf 44 isprovided with upwardly extending'li'anges 5I at its lateral edges. YRodsV52 each having a head 53v embedded in lone of the-flanges 5I- extend`through the flanges and through aperturesv541in theuprights 41. The head53 ris preferably hex#A and 32, theV side' Ably'x43;.relativefto therods 562.

freely in the apertures 54. A spring washer-55 agonaLLbut may be anynon-circular shape, in orderLt'oprevent rotation of the movable assem-TheA rodsA turn is mounted'on each rod 52 anda castellated nut 56isscrewed tightly against 4the washer land held in place by means of acotter pin 51.

As shown in Figure 8, the pivot 48 is positioned just above the shelf 44at a point between the center and the back ofthe shelf. 'Many ofv theparts on-the frontportion of the chassis base. 5 0 are. radio frequencyvcoils which are relatively light inweight. The 'heavierA-parts such aspower transformer and iron core chokes are mounted on the rear portionof the chassis base. If desired, lead weights may also be added to therear portion of the chassis base in order to balancer the movableassembly at a point close enough to the rear of the cabinet to obtainthe desired angular adjustments in the space available. y

'aligned pivotal movement of thel assembly will not disturb the balancebecause the moment arms on both sides of the pivot will changeproportionately as the assembly is moved about the pivot and. bothsideswill remain substantially balanced. TheV friction of the springwashers 55 is sufficient to hold the assembly in any angular position.to which it has been adjusted. The force required to vmove the assembly43 about the pivot '48 is that required to .overcome the friction in theassembly plus vor minus whatever slight deviation may exist from perfectbalance. It is obvious that the deviation from perfect balance must notexceed the friction.

In order to permit movement of the assembly 43'about the pivot 48, thetop section 46 is beveled at its rear-top surface, as indicated at` 58vand the forwardly extending edge of the adjacent portion of the cabinettop 59 is complementarily beveled, as indicated at 60. The top edge ofthe front wall 6I just below the assembly 43 is beveled on the inside,as indicated at 62, so that an apron 63, attached to the front of theshelf 44, may extend into the cabinet when the assembly 43 is in itsdown position. When the assembly is moved upwardly the apron closes thespace between the bottom of the assembly and the top of the front wall6|' just below the assembly. Instead ofthe solid apron 63 a collapsiblebellows may be substituted. When a bellows structure is used the frontwall 6| will preferably be provided with a recess into which the bellowsmay be collapsed.

In the embodiment hereinabove described, the -top section 46 alwaysprojects forwardly of the front panel 45, as indicated at 64, to serveas a top light shield for the image exhibiting member 65. Theoverhanging portion 64 of the top also serves as a convenient means formoving the assembly 43 about its pivot. When the assembly` is in itsdown position the inset sides 66 furnish side light shielding.

In Figures 10 and 11 a movable assembly 61 is mounted in a cabinet 68 bymeans of conventional drawer, slides and rollers. The ,assemblycomprises a front panel 69, side panels 10 and a shelf` (not shown). Thechassis andv picture tube are mounted` to move with the assembly. lThefront panel is provided with a handle 'H to facilitate sliding of theassembly. When the assembly is in its inner position, as Shown in Figure10,- the inset side walls 12 and the overhanging top sec-1 tion 12 serveaslight shieldsfor the imageexhibiting ,member 13. When no lightshielding is required, as in a darkened room, the assembly is,

pulled out to provide full usable angle of vision;

In the construction of Figures 12 to 14 the television chassisis'divided-into two parts, a portion 14 being mounted in the base 15ofthe cabinet.16 andv another portionv 11 being mounted on ,a shelf18.17-The shelf 18, the front panel .19, side walls Rilland thememberl.,Vwhich constitutes a partbfnthefront ofthe cabinet` and is rigidly,connected vto the shelf and the frontpaneL. constitute an' assemblywhich ispivotedA to the light shielding. WhenV it is'desired to lowerthe.

angle* of vision the Iassembly is grasped at the top-rail 86 andthen.pulledforwardly'to the position shown-inFigure'lB. Abellows '81 issecured to a flange 88 extending. rearwardlyand down-I wardly from thetop edge of the front panel 19.- The other edge of the bellows issecuredv to a cross piece 89 secured in the cabinet. The bellows closesthe gap between the top and upper sides of the assembly and the cabinetwhen the assembly is in one of its forward positions. If desired, thebellows maybe replaced by a solid apronxsecured to the :top edge o'f thepanel YI9 and to the rear of the side walls 88.

- The' assembly is easily .tilted to any position as` the weight isoffset by any suitable counterbalancing system. '.In Figure 14 an'uprightSU secured tothe baser15 extends upwardly past the shelf 18. Abar 9| is secured to the edge of the shelfri18 and extends downwardlytherefrom.` A spring v92 has one end secured to the top of the upright90 and the other end to the bottom of the bar 9| so as to constantlyurge the assembly upward into its forward position. The force of thespring is not quite equal to the weight. of the assembly so that aslight additional force is required to move the assembly. However, thepull of the spring is sufficiently close to the weight of the assemblyso that it will, together with the friction in the hinge, hold theassembly in any adjusted position. The pull of the spring is greatestwhen the assembly is in the position ofV Figure 12 as the spring isextended the greatest amount. In the position of Figure 13 the springpull is less, but less upward force is required as the center of gravityof the mass shifts towards the pivot. There is also a balancing force onthe other side of the pivot as part of the assembly rotates beyond thepivot.

The positioning of the picture tube at an upward angle, as shown in theembodiment of Figures 12 to 14, instead of in a substantially horizontalposition permits the use of a cabinet of greatly reduced depth.

In the embodiment of Figures 15 to 18, inclusive, means is provided foradjusting the image of about twenty degrees.

inanges insana. |04.' ."rherfrontlos of the cab-Y vent facce'ssvto` the.cabinet between thefront'panel 99,."and' the; adjacent portions of thefront |05:V

when therfimage exhibiting; assembly93 is in' la: laterallyrotated'position; as indicated inA Figure 16;A Theflangesr|03 andld areslightly.rounded, asindicated at |08 and |09. to provide clearancewhenthe assembly 93 isrotated from the straightV forward positionv ofFigurer 15 to the. laterally rotated position of Figure 16..r f

. A' rod H0' extends from..the.r`ear edgef'ofthe platform95 and Amay beused as a handleto rotate the assembly-93r laterally Withintarange Arounded, reinforced back- I at-the: rearr1edgeof'the cabinet H2. isprovided with. a horizontallyextending slotI |3 through:l which the rod.I extends. AY wing.. nut

' I Muis threaded on the endof. the-'rod H0 and can be tightenedagainstithe` back to" positivelyhold the assembly 93 in any laterallyadjustedl position. It will be obvious -that' the `shelf Figure 17,uponV which the assembly 93 is pivoted, may beconstructed in accordancewith the disclosure ofthe :embodiments illustrated in Figures 1 toV 9,inclusive, so thatvthe assembly 93fmay be: adjustedrvertically as wellaslaterally.

Although theillustrations in thisv vapplication are of thedirect'viewing typev of' televisionreceiver. and. the: accompanyingdescription is; for the-most part, Writtenzfor this type-.oi` receiver,

theprinciples involved, vof changeof locationVV or angle of. imageexhibiting assembly'resulting in. correspondinggrcha-nge of. location oranglerof imageviewing screenfalsoA apply to the' projec` tion; reecting.and 'other' types oftfelevisionv re#- ceivers. In v the projectionvreceiver-'thiszmovable 8" assembly: would zfgenerallwcontain..thetireflcting mirror.:- andfthe fronti viewing` screen; Whi1e. ...in.thefreectingltypelit wouldxconta'in the. :re'cting' mir1j01" Y, 4

While. Il have f described. a few preferred I eme bodim'entsv of :myinvention considerable.: detail, itwillbei understood that thedescription is intended? toA be illustrative, ratherA th'anirestrictiva?. as. many detailsof structure-"m'aybe. modiiedorl'changedwithout departing' fromtlthe. spiriti or." scope ofi niyi` invention.Accordingly; I do'v noi-,desire to be' restrictedi to the exact de`tails-described, exceptA as'lin'iite'd by thefappendjed. clairn..y

Iclaiinz"y Y Inl a .television receiverpacabinet havngf a recessI in.thetupperv portion'of' its frontiwall,A an assemblypivotedin'saidre'cessed portion'to move. about ai single.: horizontal axisvbetweenr al position Vwithin the normalconfines of'saidl cabinetand aposition forwardly of said cabinet, said: assembly including!jan'ap'ertured. front. panel and". an'. imageiiexhibiting member.rvviewable throughY saidaperturedfront panel' in alllpositions'l Within:the range of.` movementyof: said assembly..

JOSEPH K; ROSE;

REFERENCES orrEiDi The following references are offrecord inthe iil'eof'tlnsV patent:

UNITEDSTAFES PATENTS- I K Y Datei."

Number Name 1,801,208 Rasmussen' .Apr; 14, 1931 1,988g522V y Stanley.' Jan. 22, ..1935 2,109,431 McDonald Feb.: 22,1938 Number Name@ Date.V

2,260,721 Linsell .Octl 28,1941 2,285,509 Goshaw JuneV 9,'.19422,304,921'. Hopkins Deo."115;.1942 2,350,889 '2 Harman.l sJune 6,.:194452,413,922' t Jensen: et al .Jan. 7, 1947i 2,446,214. Cramer;v..Aug.:13,.. 1948 Y FoREiGN PATENTS' Number Y, Countryg. L Y y, Datei100,949'. Australia:- May 20,` 1937 Y

